1.
|
|
2.
|
Washington : Government Printing Office, 1915.
|
3.
|
[Denver, Colo.?] : Dept. of the Interior, U.S. Geological Survey, 1990-
I 19.76: 90-59 |
|
4.
|
[Reston, Va.] : United States Department of the Interior, Geological Survey, 1990.
I 19.76: 90-669 |
|
5.
|
Reston, Va. : U.S. Geological Survey, [1994]
I 19.76: 93-681 |
|
6.
|
Denver, CO : Dept. of the Interior, U.S. Geological Survey ; Washington : U.S. G.P.O., 1993.
|
7.
|
Washington, D.C. : U.S. G.P.O., 1989.
|
8.
|
Denver, CO : U.S. Dept. of the Interior, U.S. Geological Survey, 1999.
I 19.76: 99-5 |
|
9.
|
Washington : U.S. G.P.O., 1988.
|
10.
|
Washington : U.S. G.P.O. ; Denver, CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1988.
|